How to split string literal using java regex

Some time we need to split a string literal based on some delimiters . Java regular expressions provides an easy way of doing it. Let see a sample java program used to split a string literal based on pre-defined delimiter.

MySplitter.java

import java.util.regex.*;

public class MySplitter {

       public static void main(String[] args) {

              String input = "www.naeemgik.blogspot.com";

              Pattern p = Pattern.compile("\\.");

              String pieces[] = p.split(input);

              for (int i = 0; i < pieces.length; i++) {

                     System.out.println(pieces[i]);

              }

       }

}

The output of above code would be:

   www
   naeemgik
   blogspot
   com
 

Date to String conversion in Java

In this post I am going to show you some sample code for converting date to String, getting current date and converting it to specified date format like YYYY-MM-DD, YYYYMMDD and many more format as you wish.

Getting Current Date and display it in yyyy-mm-dd format

public String getCurrentDate() 

{

       String currentDate = "";

       Date d1 = null;

       final Calendar c = Calendar.getInstance();

       SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");

       mYear = c.get(Calendar.YEAR);

       mMonth = c.get(Calendar.MONTH) + 1;

       mDay = c.get(Calendar.DAY_OF_MONTH);

       currentDate = "" + mYear + "-" + mMonth + "-" + mDay + "";

       try {

              d1 = dateFormat.parse(currentDate);

       } catch (ParseException e) {

              e.printStackTrace();

       }

       return dateFormat.format(d1);

}

Getting Date as a parameter and converting it to specified format 

public String getFormtedDate(String date) {

       String myDate = "";

       Date d1 = null;

       SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");

       myDate = date;

       try {

              d1 = dateFormat.parse(myDate);

       } catch (ParseException e) {

              e.printStackTrace();

       }

       return dateFormat.format(d1);

}